Generally, gaps are filled the next day, and the probability of them being filled within a week is relatively low. Of course, there are also gaps filled after a few months, with even lower probability. For example, the gap from last year's election was filled only in March this year, which has a longer time span. So, from a probabilistic standpoint, if a gap is discovered the next day, one can consider opening a small short position, but the position size should generally be cautious.

Next, BTC is likely to fill the gap, the CME gap is around 114000. When it reaches this level, you can consider buying spot. I previously bought some short positions at 117000, and at that time I judged the pullback too early. However, generally speaking, there will always be a pullback after a rapid rise, especially when the main force pushes the price up at 5 AM, which is exactly when the CME trading is closed for 1 hour (5:00-6:00). The main force's intention is particularly obvious, so there is a need to fill the gap.